Home / 21,190,395.45-31,782,492.98-10,108,964.86

Finding the Fourth Proportional to 21,190,395.45, 31,782,492.98 and 10,108,964.86

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Solution

The fourth proportional to 21,190,395.45, 31,782,492.98 and 10,108,964.86 is: 15,161,968.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190,395.45 : 31,782,492.98 = 10,108,964.86 : x
  2. Step 2: Convert to fraction form
    21,190,395.45/31,782,492.98 = 10,108,964.86/x
  3. Step 3: Cross multiply
    21,190,395.45x = 31,782,492.98 × 10,108,964.86
  4. Step 4: Simplify right side
    21,190,395.45x = 321,288,104,723,764.88
  5. Step 5: Solve for x
    x = 321,288,104,723,764.88/21,190,395.45
  6. Step 6: Final answer
    x = 15,161,968.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.